Dyfyniad APA

Schaefer, D. A. (1970). Reflections on the present and future. Zurich: The Union Bank of Switzerland.

Dyfyniad Arddull Chicago

Schaefer, Dr. A. Reflections On the Present and Future. Zurich: The Union Bank of Switzerland, 1970.

Dyfyniad MLA

Schaefer, Dr. A. Reflections On the Present and Future. Zurich: The Union Bank of Switzerland, 1970.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.